Issue 9, 2015
From the journal:

Dalton Transactions

A silver-alkynyl cluster encapsulating a fluorescent polyoxometalate core: enhanced emission and fluorescence modulation†

Chao-Yu Song,a   Dong-Feng Chai,a   Rui-Ren Zhang,a   Hong Liu,*a   Yun-Feng Qiu,*b   Hua-Dong Guoc  and  Guang-Gang Gao*ac  

* Corresponding authors

a Department of Chemistry, College of Pharmacy, Jiamusi University, Jiamusi 154004, China
E-mail: hliu@jmsu.edu.cn, gaogg@jmsu.edu.cn

b State Key Laboratory of Robotics and System (HIT), Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
E-mail: qiuyf@hit.edu.cn

c Department of Chemistry, Changchun Normal University, Changchun 130032, China

Abstract

A new silver(I)-alkynyl cluster with a [Eu(W5O18)2]9− polyoxoanionic core of [Ag42{Eu(W5O18)2}(tBuC[triple bond, length as m-dash]C)28Cl4] [OH]·H2O (1) has been designed and synthesized. The [Eu(W5O18)2]9− polyoxoanion acts as a template to induce the formation of the surrounding 42-core Ag(I) cage. Due to the hydrophobic silver(I)-alkynyl shell, 1 features an unusual fluorescence enhancement as compared to the precursor of the [Eu(W5O18)2]9− polyoxoanionic core. Interestingly, the silver ions in the shell silver(I)-alkynyl cage can only be reduced to silver atoms by irradiation with high energy UV light (2 kW). Upon high UV irradiation, fluorescence quenching of 1 has been observed. Moreover, the solution fluorescence of 1 can be modulated by addition of S2− ions into the system, which also leads to the fluorescence quenching phenomenon. The successful synthesis of 1 demonstrates a new route to the detection of high energy UV irradiation or S2− ions by elaborate design of fluorescence quenching of silver(I)-alkynyl clusters.

Graphical abstract: A silver-alkynyl cluster encapsulating a fluorescent polyoxometalate core: enhanced emission and fluorescence modulation

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C4DT03826F
Article type
Paper
Submitted
13 Dec 2014
Accepted
05 Jan 2015
First published
07 Jan 2015

Dalton Trans., 2015,44, 3997-4002

Permissions

Request permissions

A silver-alkynyl cluster encapsulating a fluorescent polyoxometalate core: enhanced emission and fluorescence modulation

C. Song, D. Chai, R. Zhang, H. Liu, Y. Qiu, H. Guo and G. Gao, Dalton Trans., 2015, 44, 3997 DOI: 10.1039/C4DT03826F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements